Tractor plow



' I 1,637,525 A 1927' T. HUSTON TRACTOR PLOW Original Filed June 25, 1923 4 Sheets-Shet l.

Cl Home T. HUSTON TRACTOR PLOW Aug. 2 1927;

Original Filed June 25. 1923 p 4 Sheets-Sheet '2 Gnome Aug. 2,1927. 1537525 T. HUSTON TRACTOR PLOW Original Fil'ed June 25, 1923 4 sheets sheet 5 2a f l M. /f.f leg ill 44 m in I i w ill] 1 il N a? 'a /8 3 a'wmfoc @Homaq 1,637,525 1927' T. HUSTON TRACTOR PLOW Original Filed June 23, 1923 4 Sheets-Sheet 4 Patented Z, 1927.

TOM m smon; on COLUMBUS, GEORGIA, A

ssronon o o. n. MEDLEY, or COLUMBUS,

I GEORGIA.

- TRACTOR PLOW} Application filed June 23, 1923, Serial No. 647,210. Renewed October 23, 1 926.

' Myv invention relates to a plow attach ment for tractors and consists essent ally in the provision of novel and effective means v designed and adapted to attach a diskplow to a tractor so as to obtain the maximum usefulness, durability and efficiency from the plow while requiring the t least possible change in or probability of injury to the tractor. I Y My invention contemplates the mounting of the plow at the side of the tractor and onthe forward end of a thrust bar which at its rear end is connected to the tractor draw bar. My mounting arrangement makes provision for utilizing the weight of tne tractor to hold the plow positivelyin the ground while it permits the plowtobe swung about the thrust b'ar toadjust it. y y i My invention further contemplates tne provision in the thrust bar connections between the tractor draw bar and the plow, of a shock absorber preferably in the torm of a compression spring which ,will absorb,

a single large disk plow capable of cutting a furrow approximately of the same width as is now out by two of the commonly used disks working onebehind the other, as by using a single disk plow, the mountii'ig control and manipulation thereof is simpliconstruction of the swinging plow frame swiveled on the thrust bar and carrying means for rotatably mounting thereon and lubricating the disk plow. c

I My invention also contemplates the pro vision of an improved guide bracket tor the forward end of the thrust bar liavingineans for effectively attaching it to the tractor housing by making use of the standard bolt holes in the housing flanges, the bracket having novel means which can be most offeotively clamped to the housing flanges.

My invention also contemplates the pro-- vision of novel means for detachably mounting on the plow frame a scraper for the;

disk plow.

My invention also contemplates utilizing the supporting bracket for the thrustbar My invention also comprises the novel.

to carry the standard on which the plow adjusting levers are mounted.

My invention also contemplates the provision of novel means for effecting an adjustable extension of the front axle on the plow side by the provision of anextension axle which can be adjustably connected to the standard axleby a pin entering the front axles knuckle pin bearing and by a clampat its inner end engaging the front axle where it Wlll afford thedesired leverlage. By this means I avoid any drilling and weakening of the front axle to clamp the extension axle in adjusted position thereon. I

My invention also comprises the novel detalls oi construction and arrangements of parts which in their preferred embodiment only are illustrated in the accompanying drawings, in which Flg. 1. 1s aside view of a tractor with one rear wheel broken away showing my improved plow attachment in side elevation.

. Fig. 2 is a plan view of Fig.1 with the water tank broken away to show the brace for thelever standards. and with anextenjsiouaxle'applied to the front axle.

Fig. ills an enlarged detail plan view of the swinging plow frame, its operating lever and mounting bracket. I

Fig. 4t shows the rear end of the thrust bar and its shock absorbing connection to the rear bracket that fastens to the draw bar.

t Fig. 5 is a rear elevationof the front extension axle. i c

,Figs. (Sand 7 are detail side and front views of tl'ie clainp bracket for supporting the forward end of the thrust bar.

Fig-s8 and 9 are sectional views showing "in detail the mounting of the disk in the swinging plow frame.

Figs. 10 and 11 are detail views snowing support on the swinging"plow frame.

Similar reference numerals refer tosimilar parts throughout the drawings.

' I show a tractor of the well known type having front wheels 1, rear wheels 2, a housaxle 6, all 'ofwhich parts are of standard construction and require no modification or change for the application of my plowing attachn'ients. The plowing attachments comprise a rear bracket 7 adapted for attachthe manner of mounting the scraper in its I ment to the draw bar 5, the bracket being provided with bolt holes 8 adapted to register with and be bolted through the bolt holes provided in the draw bar. This bracket has at one side a step 9 and at its rear end a lug or eye 10 with hole 11 therein to provide an attachment for draft rigging of any implement to be drawn behind the tractor. At one side the bracket which is of heavy steel casting is provided with a right angled e2;- tension 12 formed with a socket 13 which receives a coil spring 14 and the rear end of a thrust bar 15 which is preferably a pipe with its rear end seated against the spring 14 and tree to slide in the socket so as to absorb axial shocks imparted to it. The forward end of the pipe 15, which will hereafter be called the thrust bar, is adapted to be slidably supported in a bearing 16 formed at the lower end of a clamp bracket 17. This bracket has at one side a contin uous' arcuate rear flange 18 and in spaced relation therewith spring flngers 19, the flange 18 and fingers 19 having aligning bolt holes spaced on centersto correspond to the c nters of the bolt holes in the housing flanges. The continuous flange is arranged .to abut the rear flange and the fingers 19 overlap the front flange and when bolted thereto are sprung or bent inwardly so as to positively and rigidly clamp the bracket a AU to the housing flanges. its upper end the bracket 17 is in the shape of anangle iron adapted to receive and have securely bolted to it an angle iron standard 20 which rises vertically beside the machine and at an intermediate point so connected by a brace bar :21 (Fig. to the motor 22, this brace being adapted to be connected by one of the cap screws of the motor head block. At its upper end the bracket has rigid thereon a toothed segn'ient 23 which co-acts with the spring latch or dog 2 mounted on a hand lever 25and controlled by a grip member 26. The lever is pivoted near its end on a pivot pin 27, its forwardly overhung end being pivotally connected to a bar or rod 28.

The plow is mounted upon a yoke frame 29 having a forward arm 30, formed with arearwardly opening socket which receives and bears against the forward end or" the thrust bar 15, and a rear arm 31 formed with a bearing opening through which the thrust bar 15 passes. The'train-e is cut away to clear the bracket 17 and the angle standard 18, as will be best seen in Fig. 3. A its forward outside corner the frame is pro vided with a plow supporting extension 32 in which is formed a socket 33, rounded at its inner end and having cylindrical walls machined to form a bearing for the recep- I tion of the journal pin or shank 3% by which the disk backing plate 35 for the disk plow 36 is rotatablymounted in the plow frame.

.59 open at its top and in line The forward circuinferential edge 3 of the s I I I O H w socket is beveled and 'ne length or contact with the face The shank .Si is tapered slightly inwardly, thus causing it to bear for lateral thrust at the outer end only near the shoulder and for end thrust at the inner end only against the concave inner end of thesocket. This greatly reduces friction which further eliminated by a grez re cup 89 feeding lubricant into the socket. The extension is provided about its outer end with a circun'iterential flange and a plit retaining ring -l1 is provided with flanges which overhang the extension flange and thus SEZVGS to hold the plow rotatably mounted in the socket when the split ring, the backing plate and the disk plow are connected together by bolts as. as shown in S. The disk plow reinforced by the concave-convex; backing ilate S5 and is large diameter I desire the single large disk to perform the work heretoi'i'ore done two disks.

lnnncdiatel in the rear of the extension 32 from the plow frame is a lug ll. the opposite sides of which are reduced to gii'e it an I bean'i cross section. in the chzirnncls: thus tornied are bolted a pair of bars 4:5, see Fig. 10, which at their upper ends are received in countersunk seats l6 in the of a head block This head block formed with a seat l8 opening axially oi and towards the disk plow and adapted to receive a shan on a scra er blade 50. The thickness of the s raper shank is slightly greater than t at the reduced portions 51 of the block so that when the bolts 52, which connect the bars l5 to the block by passing through the reduced portions 51 are tigh ened up the bars are drawn against iind clamp the scraper shank in position. By loosening the bolts the shank can be readily withdrawn. V t

Near i s rear end the plow carrying is provided with a lateral extension to which is bolted a frame 5% having at its outer end three spaced arms 55, 56 and The arm 55 is extended to "form a step and the arms 56 and 57 have aligning openings to receive a pin by means of which the lower end of the adjusting bar is made fast to the arn Tl e arin a slot -ith the pin 58 and so disposed that the pin can be inserted or removed only when its dow'nturncd angled end 60 is raised into position to pass in or out through the slot. This prevents its accidental displacement.

The front axle G is provided with the usual knuckle pin beari g 61 and provide an extension axle (32 in the form of l. channel casting having its upper and lowcr frame and projecting u'pwarcly and outwardly liid iii)

flanges spaced to receive snugly between them the bearing 61 and to be connected thereto by a: bolt 63. At the'irinner end the extension axle flanges are enlarged to receivetransverse bolts '64 which serve to at-' tach a clamp plate thereto so as to clamp and positively engage the axle 6. The extension axle has itsfrec end downturned at 66 and provided with" a knuckle, pin bearing67, the duplicate of 61. The flanges of the extension axle areprovided with a. series of bolt holesv 68 (Fig. 2),thusp-ermitting it to be adjusted to overhang more or less beyond the bearing 61 as may be desired. p Having assembled the parts in the manner. described, the tractor is started, the

lever 25 is raised andthe plow frame 29,

by means of an adjusting rod 28. is swung outwardly and downwardly about the forward end of the thrust bar1'5 until it is ,in position to plow to the desired depth.

The thrust strain of the plow is transmitted from the frame arm 30 to the forward end of the thrust bar and throughthe thrust bar and springlt to the draw bar. Unusual obstructions cause the thrust bar 15 to slide rearwardly in its guide bearings 16 and into the socket 13, compressing the spring and absorbing the shock without the breaking of parts. The axle extension enables the near front wheel to beset to work in the last furrow, its 'downturned end serving to hold the tractor approximately level. The

whole weight of the tractor is transmitted through the bracket 17 to the forward end of the thrust bar 15 and thus serves to hold the plow to its work.

Though I have described 'withgreat particularity the details of the, embodiment of the invention herein shown, it is not'to be construed that I am limited thereto, as

changes in arrangement and substitution of equivalents. may be made by those skilled 1n the art wlthoutdeparting frointhe ina bearing for the forward end of said barn a disk plow mounted OII'SElltl frame. and the thrust means to adjust the frame about bars axis. I p

2. A tractor plow attachment in accord- I ance with claim 1, in which the means for mounting the plow frame on the thrust bar comprises a rearwardly opening socket adapted to receive the forward end of the thrust ,bar and transmit thereto its thrust strain in an axial direction.

3. A tractor plow attachment in accord ance with claim 1, in which the plow frame has'a forward socketed member adapted to receive the forward end of the thrust bar and a rear bearing member adapted to trans mit its angular thrust, to said thrust bar.

4. A tractor plow attachment in accord ance with claim 1, in which the thrust bar is mounted free to turn about its long axis in the rear draw barconnection and the front bracket bearing. 4

A tractor plow attachment comprising a plow frame having a cylindrical non-taporing socket and the disk plow having a taper pin fitting in said socket so as to take bearingsatthe inner and outer ends only of the socket, "and means to holdthe rotatable plow assembled on the frame.

6. A plowing attachment for tractors comprising a thrust bar, means connected to the tractor draw bar and housing for sup porting the ends of said'thrust bar, a plow frame mounted only on the forward end of the thrust bar, means to adjust said frame 1 about the axis of the thrust bar, and a single disk plow rotatably mounted in said frame. 7 In a tractor plow attachment, a thrust bar, yielding means to drive said bar from the tractor draw bar, means to support the forward end of the tractor free for longitu andto transmit thereto its direct thrust,

dinal play, and a plow supporting frame I adjustably mounted on the forward end of the draw bar.

A tractor plow attachment in accordanceywith claim 7 in which the yielding means to drive the thrust bar from the tractor draw bar comprise a bracket having means-to'att ach it to the draw bar and provided with a forwardly'extending socket,

and a coil spring mounted in said socket, the rear end of the thrustbar being free to spring. r

9. In combination with a tractor having a rear draw bar and flanged housings, of a ,slide in said socket against the action of said:

bracket bolted to the draw bar, a tubular thrust bar having its rear end engaging said bracket. a forward bearing bracket for the thrust bar bolted to said housing flanges, a

plow frame having arms engaging the thrust bar on both sides of said bearing bracket,

meansto adjust said frame about the axis of .SAlCltllTllSt bar, and means to mount a plow on said frame.

10. A plow attachment for tractors according to claim 9, in which the forward plow frame arm has a socket that receives the forward end of the thrust bar, and the rear plow frame arm has a bearing through which the thrust bar passes.

11. A tractor plow attachment comprising, in combination, a bracket adapted to be bolted to the draw bar or" the tractor and having a yielding bearing, a thrustbar having its rear end received in said bearing, a bracket adapted to be clamped to the tractor housing and having a guide bearing for the forward end of the thrust bar a plow frame mounted entirely on the forward end of the thrust bartree to swing about the axis of said bar, lever ope-rated means to adjust the plow frame, and means to mount a single disk plow on said frame.

12. A tractor plow attachment according to claim 9, in which the forward bearing bracket supports a standard on which the plow adjusting lever operating means is mounted. r

13. In a tractor plow attachment, :1. tor-v ward bearing bracket for the thrust bar, comprising members adapted to straddle the tractor housing flanges and to be bolted to said housing flanges.

14-. A tractor plow attachment bracket according to claim 18, in which the bracket member engaging the rear housing flange is formed by a solid curved plate, while the members engaging the front housing flange are spaced, yieldable clamp fingers. I

15. In a tractor plow attachment, a swinging plow t'rame formed by an integral casting having spaced thrust bar engaging elements means for the attachment thereto of a plow and an operating arm and means to transmit thrust from the tractor draw bar to said tractor frame.

16. A plow attachment in accordance with claim 15, in combination with a bracket mounted on the tractor and interposed between the thrust bar engaging elements of the plow frame, and a thrust bar mounted in the bracket and engaging said elements.

In testimony whereof I aiiin my signature.

TOM HUSTON. 

